1. State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, People’s Republic of China
2. School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, People’s Republic of China
3. Guangdong Teachers College of Foreign Language and Arts, 463 Shougouling Road, Guangzhou 510640, People’s Republic of China
4. Natural Products Research Center of Guizhou Province, Guiyang 550014, People’s Republic of China